We report the case of a male patient with Miller-Dieker syndrome(MDS)and gallbladder cancer.Chromosome analysis by fluorescence in situ hybridization revealed a deletion in the 17p13.3 region,an area thought to contai...We report the case of a male patient with Miller-Dieker syndrome(MDS)and gallbladder cancer.Chromosome analysis by fluorescence in situ hybridization revealed a deletion in the 17p13.3 region,an area thought to contain tumour suppressor genes,including the hypermethylated in cancer 1 gene.Considering the rarity of gallbladder cancer in children,we propose that MDS as the genetic background of this patient may have played a role in the occurrence of gallbladder cancer.Conclusion:Our present report indicates that the emergence of cancers should be taken into consideration during the long-term follow-up of patients with MDS.展开更多
Black liver is a common finding in Dubin-Johnson syndrome (DJS), which is caused by the lack of multidrug resistance-as-sociated protein 2 (MRP2). Impaired excretion of epinephrine metabolites is believed to be a caus...Black liver is a common finding in Dubin-Johnson syndrome (DJS), which is caused by the lack of multidrug resistance-as-sociated protein 2 (MRP2). Impaired excretion of epinephrine metabolites is believed to be a cause of black liver in DJS. Recently, we experienced a patient with black liver whose serum bilirubin level was normal. Coarse brown granules were observed in the hepatocytes, and this finding closely resembled that observed in DJS. However, the granules were negative for Schmorl staining. The MRP2 gene did not show any mutation. Immunostaining study demonstrated MRP2 protein expression in the liver, and it was localized in the canalicular membranes of hepatocytes. This case illustrates for the first time that DJS is not the only cause of black liver.展开更多
文摘We report the case of a male patient with Miller-Dieker syndrome(MDS)and gallbladder cancer.Chromosome analysis by fluorescence in situ hybridization revealed a deletion in the 17p13.3 region,an area thought to contain tumour suppressor genes,including the hypermethylated in cancer 1 gene.Considering the rarity of gallbladder cancer in children,we propose that MDS as the genetic background of this patient may have played a role in the occurrence of gallbladder cancer.Conclusion:Our present report indicates that the emergence of cancers should be taken into consideration during the long-term follow-up of patients with MDS.
文摘Black liver is a common finding in Dubin-Johnson syndrome (DJS), which is caused by the lack of multidrug resistance-as-sociated protein 2 (MRP2). Impaired excretion of epinephrine metabolites is believed to be a cause of black liver in DJS. Recently, we experienced a patient with black liver whose serum bilirubin level was normal. Coarse brown granules were observed in the hepatocytes, and this finding closely resembled that observed in DJS. However, the granules were negative for Schmorl staining. The MRP2 gene did not show any mutation. Immunostaining study demonstrated MRP2 protein expression in the liver, and it was localized in the canalicular membranes of hepatocytes. This case illustrates for the first time that DJS is not the only cause of black liver.
